This section contains the series of the resident population for the intercensal decade 2001-2011 that it is necessary to reconstruct backward, after the release of the Legal Population of Municipalities at the 15th
Population Census. In fact, on the basis of the census results, released at December 18, 2012 (Official Journal of the Italian Republic. no. 294 of 18 December 2012, Supplemento Ordinario No. 209), the resident population in Italy as a whole, on October 9, 2011 (date of execution of the Census), was 59,433,744 of which 4,029,145 individuals of foreign nationality.
On the same date, the two population aggregates - calculated from 14th
population census (October 21, 2001) on the basis of the findings recorded over the decade 2001-2011 - were rather accounting, respectively, 60,785,753 and 4,790,405 units. Such calculation was carried out by Istat, for each italian Municipality, since the population registered at October 21, 2001 and yearly updated on the basis of the findings of the municipal population registers (number of registered units for birth, deregistered units for death, registered and deregistered units for change of residence between italian Municipalities and from/to abroad, registered and deregistered units for any other reasons, such as postcensal ex officio corrections, unavailability, etc..).
To recalculate the number of resident population over the decade 2001-2011, therefore, it is necessary to carry out the operations of intercensal reconstruction, which are carried out for each italian Municipality and must ensure consistency with each other population vectors – by single year of birth, gender (M/F) and citizenship (Italian/foreigner) – observed at both execution dates of 14th
(October 21, 2001) and 15th
(October 9, 2011) General Population and Housing Censuses.
The need to respect this multi-dimensional constraint results in inevitably modifying the resident population stocks (by single year of age, sex and nationality) of each italian Municipality on 1st January of each year from 2002 to 2011, as previously calculated and released by Istat over the past decade.
On the homepage of Demo, therefore, are available the new series of the resident population, consistent with the Census results and moving onward from October 9, 2011.
However, for statistical documentation, especially at territorial level, the information concerning some of the precensal resident population series 2002-2011 has been preserved and stored here. In this section, it is therefore possible to access to the following population series, according to their precensal shape:
Resident population by age, sex and marital status at 1 January of the Years 2002-2011
Demographic balance and resident population by sex at 31 December of the Years 2002-2010
Monthly demographic balance and resident population by sex of Years 2003-2011
Foreign resident population by age and sex to 1 January of 2003-2011
Demographic balance and foreign resident population by sex at 31 December of the Years 2002-2010